Home / 20,437.12-28,202.64-11,362.24

Finding the Fourth Proportional to 20,437.12, 28,202.64 and 11,362.24

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Solution

The fourth proportional to 20,437.12, 28,202.64 and 11,362.24 is: 15,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.12 : 28,202.64 = 11,362.24 : x
  2. Step 2: Convert to fraction form
    20,437.12/28,202.64 = 11,362.24/x
  3. Step 3: Cross multiply
    20,437.12x = 28,202.64 × 11,362.24
  4. Step 4: Simplify right side
    20,437.12x = 320,445,164.31
  5. Step 5: Solve for x
    x = 320,445,164.31/20,437.12
  6. Step 6: Final answer
    x = 15,679.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.